winslow



fitte JOHN M.. WINSLOW, OF ROCHESTER, NEW YORK. Leiters Patent ,Nm 67',832, iated .August 13, 1867.

I IMPROVEMENT 1N `nrs-cnrs.

*gov- To ALL WHoM rIriLftY coNcERN:

Be it known that I. JOHN M. WINSLOW, of Rochester, in the county ot' Monroe, and State of New York,

have invented n new und useful Improvement in Optical Instruments for restoring sight to the eye when it has become impaired hy age or other. causes; and I do hereby declare that the following is a full and exact" description of the construction and operation ot' the same, referencebeing had to the annexed drawing, and to the letters ot" reference marked thereon, making part of the specifcatinn.

Figure 1 is a view of the instrument.

a a are two cups, made of hard rubber or other material, so shaped interiorly as to tit the ball of thel eye and press upon the periphery when applied thereto. b b are two pieces of rubber tubing, about six inches long, attached atone'end to the cupsa a, and connectingr at the other end with a mouth-piece, C., having an opening through the tube of the same for exhausting the air. Y

The operation of the instrurncntis'described as follows: By first placing the tube of the mouthfpieceC betweemthe teeth, the cups a a are then tobe applied to the "eyes, irmly'closed, and bymenns of suction through the tube oi' the mouth-piece C, thecupsa a; are made tov adhere firmly to the eyes. In order toretalin the suction and the desired pressure or draught upon the eyes, the Atongue should be placed against the orifice of the mouth-piece C. By this operation the eyes will be crowded into the cups a a, and thereby assume more than their ordinary convexityg while the cups are in this manner applied to them. By repeating the operation in. this way every dayi`or the specie of about ten minutes each time, for the period of one or two months, the eyes will be gradually and permanently restored to their original shape or convexity, and, as .u consequence,

thesght, when impaired by age or other causes, will l'be made as good as ever. The rent advantaee this instrument ossessesover similar instruments heretofore constructed for the same g i n P purpose consists inbeing able* to operate upon both eyes -at one and the same time, and also in causing the pressure or draught upon the eyes to be exactly equal upon both. Being wholly under the control of the operator, any discomfort in its application, or possible injury to the eyes4 by itsapplication und use,y is easily avoided. e

p Y Claim.

What I claim :1s my invention, and for which I desire to obtain Letters Patent, is-

The instrument herein described, consisting of two cups,A to y'which rubber tubing is attached, connecting with a inouth-piece, having an opening in the tube thereof, forthe purpose of exhausting the air by means of suction with the mouth, thereby producing u vacuum between the eyes and the cups, in the manner and for the i purposes substantially ns set forth.

Witncssesf J. P. Hoosnoont, GEORGE FRAUENBERGER.

JOHN M. WINSLOW. 

